xiedeyantu commented on code in PR #4690:
URL: https://github.com/apache/calcite/pull/4690#discussion_r2625334844


##########
core/src/test/java/org/apache/calcite/rel/rel2sql/RelToSqlConverterTest.java:
##########
@@ -11095,6 +11095,23 @@ private void checkLiteral2(String expression, String 
expected) {
         .ok(expected);
   }
 
+  /** Test case of
+   * <a 
href="https://issues.apache.org/jira/browse/CALCITE-7335";>[CALCITE-7335]
+   * RelToSqlConverter generate sql containing Scala subqueries
+   * includes redundant parentheses</a>. */
+  @Test void testScalarSubqueryInSelectList() {
+    final String sql = "SELECT \n"

Review Comment:
   Good catch! Since it was a minor change, I just force-pushed it. Thank you 
for your review.



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